brookins



March 1s, 1924:

A. J. BROOKINS TRAIN CONTROL SIGNAL Filed April 15. 1921 2 Sheets-Sheet 1 March 18 1924.

A. J. BROOKINS TRAIN CONTROL SIGNAL Filed April 15 1921 A2 Sheets-Sheet 2 Hafu/ ,wf a 0 JIG ,vom Z E .T N. R 3

H71 Z U/wifey@ l any,

Mines/S' XX er Patented Mar. 18, 1924.

ANDREW J. snoox'rNs-orcirrcaeo, Immers.

TRAIN-common SIGNAL.,

appiication mea Aprii 15,1921. "serial No. 461,529.

To all whom t may concern.' l Be it known that I, ANniiuwJ. BROOKINS,

a. citizen ol' dentof Chicago, in the. county the lUnited States,

of Cook and l State of Illinois, have invented certain new and useful Improvements in Train-Control Signals, o which the following', being had to and forming This invention relates to train-control paratus whereby there is exhibited cab of an about to enter, proceed with caution,

engine or motor a signaindicates to the engineer or motorman, the block of track on which he is entering or is clear, or :that:liep-mustvv or that there -is-dan'ger ahead, s aid signals corresponding with the actual conditions the drawings accompanying a part hereof, is a specification.

a r in tlie l which that of the track'in blocks or sections towards which the engine o'r "motor,`

is advancing.

class also is signals are Control apparatus'l of this designed so that when selected displayed desired results are automatically elfectedl A rnong the objects of this invention is to obtain a magnetically controlled movable member which is locked in` 'al neutral position when the electrical circuit controlling an electro-magnet* lectively move said controlling member, is not energized, to obtain means to vmove said controlling member into os'ition which is arranged a 'neutral' at stated intervals along the tra'ck o a rail'- road. and thereby cancelling or destroyingexisting signals, to l the signal corresponding to the track con d iti ons until continuously maintain the engine or motor arrives a't the succeeding stated interval, vand to give or make a si nal corresponding with the condition of t ie track about to be' entered upon immediately subsequent to the above recited cancellation of existing signals, to'

obtain means to unlock lsaid controlling member from its neutral position immediately prior position corresponding of the ti'ackway.

to its selective movementto a with the condition Additional objects are hereinafter set forth and claimed.

In the drawings referred to I illustrate mechanical meansV to member in set. the controlling neutral` position, mechanical means to lock'said member in saidv neutral condition of electro-magnetic means to unlock while in said neutral position, etic means depending on' the the trackway yor' a given Enurnimotor, to selectively and a resi-i' reference j side installafons .by 'means' elements -which are illustrated in lFi --dis -the lock member l.an

'into f the construction .embo

' throughout the of may co-act with Mber of sections 4inadvance of .theengine or y y AAmove said controlling member-to determined positions, (and permanent magnetic means to hold said controlling member in its`selected-position until the above namedmechanical-means, positioned at stated -intervalsgalong the track,

as recited, returns .it-to' Vjneiitrallosition, ,and to automatlcallylock itin ,sai neutral positionV until electro-magnetically unlocked.

Fi '.1 is `a diagrammatielview of ltrack vwhich a cab i carried electro-magnetic member V4is `selectively ener 'zed for-.,deenergized, corresponding ivith the` condition ,ofuthe Atrack indeterni'inedblocks. A f v- Fig. 2-,islavertical seotionlof an embodiyvith a ,diagram of ment off-this invention,

withthe several 'signals controlled thereby, membersof theapparatus V theshoe poacting therewith 'in its tion, and v A v extreme upvvard.-y osition; with a short section Yof the A cacting track side `installation in elevation. A/ i f v Fig.3,is a similar vview of the several 2 in position. with ,saidshoeleaving sai track side'instaljlation, rvith. newly set signal layedn ig, 4`is'an .enlaiged vertical section ci i associatedparts. Fig: 5 is .an electricl symbol .indicating the electro and permanent ma nets entering ying the invention; .and Y 'Fig is a diagrammatic view of the cab carried members entering into the circuit formed thereby in combination with track 'side` installations illustrated and hereinafter described.

A reference character applied to designateV a given part indicates said part several figures of the drawings Wherever the same appears.

The track and track side installations which are illustrated in -Fig 1, form no part of this invention, andare used to permit .the o erationpof the constructions eine bodying t is invention 4,to .be more readily understood. Y

A, 2 and 3. represents the shell or case of Athe apparatus Fwhich is positioned on a cab or motor sothat the shoe B therethe track .side vinstallation' C, C', illustrated as represents a'passage way .a ramp rail. a which, .at the rein neutral posi- Yparts D and d of theplun'gerg and G ceiving end thereof is in communication with the air supply or train pipe of an air brake equipment. o, b, represent arms or levers which are pivotally attached at the lower ends thereof to the ends of shoev B, by pivots b', b'. The arms or levers b, b, are provided with slots b", b, adjacent to the upper ends thereof, and pivots e, which are rigidly mounted in arms a` a', of shell or case A, extend through said slots. Shoe Bis thus suspended by said arms b, b, when said shoe is not in contact with a ramp rail C, C', and when said shoe is in contact with a ramp rail said mounting of the shoe ermits it to travel up the ascending side (E, of the ramp, and to follow down the descending side C thereof. D, d, represent a plunger'of two diameters, which is movable lorgitudinally in a cylindrical passageway provided therefor in the bottom of shell or case A.' F represents an air retainin cup whichis positioned on the annular tale formed by, the. junction of represents' a'. sealedair chaxnbet'- surrounding part d ofth'efplnnger. .g represents a gland around saidpart d' of 'the plunger. The pwage way @communicates with chamber G, and hence, trair'r'pipe pressure exists in said chamber. The purposefand function of said chamber and its:c nt.=`,nts,1isV to yieldingly force plunger D, d, down?, on to shoe B` and to'forcesai'lfishoe into close contact with .the ascending' and descending sides,

(C, C), of the'ranip,rgiil`as said shoe travels thereon. This close contact of the shoe Yand ramp is lparti c :ularly .desirable when said shoe is on thede'scnding side 'ofthe ramp, to obtain s uchfcontactfas' 'will ensure a continuous electrical circuit from said-ramp tov the shoeand to tliecoils 'of an electromagnet (H). The calicarried""elements of this partial electric circuit comprises shoe B; suspending arms b,"b,'supports a', ai', walls of shell v or casefA, andconductor h to the coil fof electromagnet H`; and from said' coil the conductor k' to 'the frame of the engine o1: motor on which the apparatus is mounted;. and thence to one of the rails of the tmf-kf. i

I represents a permanent magnet, which is mounted .on frame J, and said frame is movably monntedon bracket I', by pivot j. The bracket If is rigidly secured -to shell or case J, as by lscrews or bolts I", I". K

,represents the 4plelpiece of. electromagnet H; and z', i', respectively represent the plus and minus poles of permanent magnet I; said magnet being permanent, the poles thereofv do not change, and are selectively attracted-to and repelled by the pole piece K of electromagnet H, said attraction and repulsion being selectively controlled by the direction of tlieflov'vof electrical current through the coils of said electromagnet, and

'said direction of flow beingdetermined by the direction of flow of current through part C of the ramp rail. lVhat I term the neutral position of the movable members, including the permanent magnet I, is obtained by means of pivoted lever L, and link M. Lever L is pivotally mounted on pivot Z, said pivot being stationary, and said lever is connected to frame J b v said link M1 which is mounted ou pivots m. m. represent the forked upper end of plunger D, d. As is well illustrated in Fig. 3, when plunger D d, is raised to its extreme upward travel on ramp rail C C', the forked end N, N of said plunger forces the lever L into said position, termed neutral.

Frame J is provided with recess P, and p represents a pivotally mounted latch which, by gravity, falls into said recess, when frame J is in its neutral position with said recess underneath the latch.

The frame J and permanent magnet I, are thus locked in neutral position so long as latch p is in recess P, and said latch comprises soft iron to form an armature to pole viewed in Figs. 2 and 3) correspondin with the direction of flow of the electrica current through the coil of the electroma net H. Q, represents a body of electric con ucting 4material which is mounted on the upper end of lever L, but electrically separated therefrom by insulation g.

represents a battery or other electrical generator; S, S. and S` respectively represent signals, which are illustrated as lamps designed to be lighted, when energized.

T, T', and TH represent conductors which extend from terminals t. t', t", to signals S, S', S", respectively, and from said signals to the conductor T", which extends to the battery R. t" represents a conductor which extends from battery R to conductingbody Q.

Referring to Fig. l, U represent track batteries, U and if" conductors from batteries U, U, to rails X, X', respectively. V, i. indicate track side rela-ys. V'. 'v' V, 4:" rcpresent movable conductors which are respectively controllcd by relays V, c. u, u, indicate trackside batteries, and u conductors from the positive side of said batteries to the movable conductors V. V. IV', w. indicate the contact points of movable conductors Y', fu', and u" the conductor from Contact.

oint W' to movable conductor V". Conuctor u" is branched from conductor wf" which extends to rela}1 vof a preceding block. U" represents a conductor from trackside relay 'v to the fiattery u; and U"a coiidiictorlirm contact' cates a conductor frm CJ Cssbi ai? actor being branched to extend tofboth, 'Said eQitact w", to side C' of ramp.

extends from rail X' and is branched'tocon# tact points VV'", w'. Y, g/,indiatej conductors from relay V to railsjX, X', respe tively. y', indicates a conductgigfroiiifitheconductor l -on the 'negative'ideQbttery u to movable,conductor,112"j,`V of electromagnet V of,` afgivenbll' sized by battery U, belgbhii'iitbdsif rails are electrically= connectdliylfa engine or trainon ,sai d 1jai ls electromagnet v of a' givenblock' is'eiiefgzed by battery 11 0f th nbiitibLQCLk-Qmlis when the tracksideinstallatigonf" A' said coil and batteryare'elements cox i ons, as is' illustrated in IFi ,`A1," `vvl i,eij;e a being clear) Vthe 'maar e1 gi @WGW energized by battery AU, of l saidjbloiilr the movable condiictor VL is; in corr' contact point W' of said block 3,1' end t cuit comprisin battery@ of block 2,"cen tor u, movab e conductor Yjcontaetpbm W', conductor u'tl ie Acoil ef eleetroifavnet I of block a and @anaemia das tery u isclosed; therebyeiilerg'izig' of electromagnetv of lf2. t, ,L y

Assume train or cab'X'f" 4, (Fi 1), and thatfthetr,ai'n is in b ock 1, and: is eqtli",l p trol device illustratediniV lgs Zand; is moving towardsbloek4. i 1" operate at the signal'points v'vlier C are installed in bloclr'sLQ; a

gaitas $1109.13 With' said'section or side will com- 'plete ai'rcliit comprising the following elemeiitlsgfromthe positive side of battery u, fcndiictorpjra",movable conductor V', conugtaetfpqint WLconductor u", movable con- ?'ductor V", condiictor U" side C of ramp Cf'c,'fSlioe`,-the 'shell or case A', conductor ft, 'oilr` eletrinagnet H, conductor h to "of the engine or cab, the Wheels of their saidf'engine or Icalato rail X, rail X to conffl'uctor um", lconductor um" to contact w" ",'m0,vable conductor lv", conductor ,",1 ontiict"point fw', movable conductor Q '.vLcoductor y', conductor U" back to the 'negatiye v side of battery u.

'flioivof current in the above traced dilliblhffjll" canse the electromagiiet H to ,fl-atticlj thea'imatilre latch P, to move it ont :Q f nlock frame J (carrying permanent magnet I), and the permanent magnet will be attracted to the electromaglgiletpglevl, and will turn to bring the condffgbdy Qintoi contact with the clear contact t. The permanent magnet 'lll' continuously held in this position "il "he next signallin point is reached ause'ftheQpole i of sai magnet will conw u'oiislyngattract the core piece K of the 4ona'agriet,QH, This .will cause a conl., 'clearsignalutobe displayed between f t'fliesr ^points infblocks 1 and 2. Should rtlietainlXl'" remain in block 4, as illnstrated,ia`nd train X advance to the signal ointQ', linlblocklZ, the direction of the the ciiijrentTrom the roadside bat- "is 'ev rsed, ,'lvhatlisythe ramp is, in ce,"con`nected'to the negative side t y, diie to the operation of the ,j l "iqf this` instance, incliides,-starting romlz'h'e ositive pole of battery u, in block f fjn trQu", movable conductor V', ,c'qnatjpoint W', conductor ful", movable conductor con" uctr'V", contact. point 20 lows. The conductor body Qian ni' in rifff" thef'tij-ack rail X, wheel or the cab, contact with the Contact oit Vt, ,the,tjrack train hiet-or, conductor h'. to coil of elec- Fig- 2- In this postbntbmbbd.. tb Q is in electrical Contact yijfit I EC' of As the shoe engages the desceridi said ramp, the plun er dtstartsfl l pressure ofair in c a,mber lon1iip; as'f sistiiigr gravity in said; v

releases lever L, '.ermittiif" 'a .t n r'i'i,`i` fore ment of sai d l e\lf)er .;to tli left, (as viewed in Fig. 3). "y 4reA the Vdrawin s1 ig. .1,it, will b elgb the roacls'i` e installation,ih ,tliisiigi ance 'is set to` allow current tollovv, 'from the pds'i'tive side @waaraan .block J1, :tie-satira Q' .f the ramp in block A 1, arid theengagement 'of marea', v S. 1h bay m V et-l1, conductor hi, shell or case A,

ilfS' isfei'iergize'd. Asthe'shoe B 'leave rae C' 'O'f 'the ramp b'o'dy Q, is held in,its,,positionJ energiii'n signal S', between jgalggsgggil; @iat-and ne next one by the attraction 'o the 'pole piece of the 'electromagnet to the permanent magnet, and a until the next signal point is reached. Should train X remain in block fl, as illustrated, as the train X" advances to the ramp C C in block 3, the lever L will be'V A t V member in the selected position thereof,

. moved tor neutral position, as before, by;

4 mechanical action on the approaching side, i c

.movesaid Vpermanent magnetic member to a neutral-position and means comprising a C, of the ramp, and will be locked in this position by the latch p engaging in notch or` recess P. Intliis instance the current from the roadside battery@v in'block- 3 is cut ol at the relay V, in block 4, due to the shunting of the coil of said relay by said train Xflll' er ized as the lshoe rides over the descending n' retain .the body Q, in neutral position; (inf* vdicating danger), untilthe next signal point' si e of the ram and lock p will remain in engagement Wit i notch or recessl?, and Will` is reached.A I claimyf ...,1. A'permanentmagnetic member movfw `ably mounted, an electromagi'ietic member rig- 25 idly mounted and arranged to be responsive tov `a roadside lsource of .electrical energy, and to co-act, When energ1zed,with said permanent magnetic member to move said pei-nia-v nent magnetic member to a selected position and the pole of said electroma netic mem! ber arranged to form, when the armature; of; said permanentmagnetic member, to maintain it in said selected!l position. t 2. A lpermanentmagnetic member mov ably mounted, an electromagnetic member,-

na roadside .member arranged to be responsive toa roadside source of' electrical energy, said electromagnetic member responsiveto saidrroadside member and arranged to co-act with said'permanent magnetic meinf ber to move said ermanent magnetic mem ber to Va selecte position, and the pole piece of said electromagnetic member arranged .to maintain ,said permanent mag netic member in its vselected position, and said roadside member arranged to move said permanent magnetic member .to a neutral position, and an armature responsive to said electromagnetic member arranged to lock said permanent magnetic member in said neutral position, all combined as setA lsaid Electromagnet H Will not be en -V e-energized,

giz'ing of said electroma in combination with a roadside member, c electromagnetic member arranged, when energized, to selectively move said permanent magnetic member, and the pole pieceof said electromagnetic member ar- 'ranged to' retain said permanent magnetic means-.comprising said roadside member to mechanica locking Lmember responsive to said electromagnetic member to hold` said peiinanentmagnetic member in said neutral position.l 4 i V 5. 'An electromagnetic member, a permanentfmagnetic member, a mechanical locking, member and a roadside member, said locking member controlled by said electromagnetic member, and said electroma etic memberarranged to co-act with sai pery manent'magnetic memberto move said permanent magnetic member to a selectedposition, meanscomprising .the pole piece of said electromagnetic member to retain said permanent magnetic' memberl in said selected position, in combination with meansV coactuable Awith said roadsidemember to move said permanent magnetic lmember to a neutral position, and-said locking member arranged tol hold said ermanent magnetic member in said neutra position, and to be movedfrom its locking Aposition'on the eneretic member.

'6. A movably mounte permanent magnetic member, an electromagnetic member adapted to bel selectively energized and to selectively move said ermanent magnetic vmember, anda mechanical locking member arran ed tobe controlled by the energizing of sai 4electromagnetic member, in combination. vvith mechanical means. to move said permanent magnetic member from its selected position to a neutral position, and said mechanical locking member arranged to lock said permanent magnetic member in said'neutral position, the said electromagnetic member not being energized.

7 A permanent ma netic member movably mounted and an electromagnetic member rigidly mounted and arranged to be responsive to a roadside member to be selectively energized thereby, and said permanent magnetic member responsive to said roadside member to be moved to a neutral position thereby, and a mechanical locking member, responsive to said electroina etic member, arranged to automatically loc said permanent magnetic member in said neutral position, in combinationl with a roadside an electromagnetic member and a permanent magnetic member, said members relatively movable, in combination with a roadside member and means 'to selectively control the energizing thereof, said magnetic members co-actuable, and means co-actin with said roadside member to energize sai electromagnetic member correspondingly with the energizing of said roadside member, to move one of said magnetic members to a selected position, and means co-acting with said roadside member to move said movable magnetic member to neutral position and a locking member responsive to said electromagnetic member, arranged to automatically lock said permanent magnetic member in said neutral position.

9. A roadside member and a pluralit of magnetic members one of said mem ers movabl-y mounted and arranged to be magnetically responsive to the other member, and said other member responsive to the electrical condition of said roadside member, in combination with a control member, said control member connected to said movable magnetic member to be moved to a selected position by the movement of said movable magnetic member, and said roadside member arranged to co-act with said control member to move said movable magnetic member to a neutral position and a locking member responsive to said electromagnetic member, arranged to automatically lock said permanent magnetic member in said neutral osition.

10. A roa side member and a plurality of magnetic members, one of said members immovably mounted and one movably mounted, said movably mounted member arranged to be res nsive to the magnetic condition of said immovable member and said immovable member responsive to the electrical condition of said trackside member in combination with a control member, said movable member and said control member connected, to move said control member to a selected sition on the movement of said movab e member, and said control member arranged to be mechanically moved to a neutral position by said roadslde member and to move said movable member to a neutral position, and mechanical means to automatically lock said movable member in said neutral position, said locking means responsive to the magnetic condition of said immovable member.

11. A roadside member and a plurality of magnetic members, one of said members immovably mounted and one movably mounted, said movably mounted member responsive to the magnetic condition of said immovably mounted member and said immovably mounted member responsive magnetically to the electrical condition of said roadside member, in combination with a control member and means connecting said movable magnetic member and said control member to move said control member to a selected position on the movement of said movable member, magnetic means to maintain said movable magnetic member in a selected position and said roadside member arranged to mechanically move said control member to a neutral position and means responsive to the magnetic condition of said immovable magnetic member to automatically lock said movable magnetic member in said neutral position.

12. A roadside member, a mechanically locking member and a plurality of magnetic members, one thereof immovably and one movably mounted, and said locking member controlled by said immovably mounted magnetic member and said immovably mounted magnetic member responsive magnetically to the electrical condition of said roadside member, and said movably mounted magnetic member responsive to the magnetic condition of said immovably mounted magnetic member, in combination with a control member connected to and arranged to be moved to a selected position by said movably mounted magnetic member, magnetic means to retain said movabl mounted ma etic member in said selecte position, an means co-actuable with said roadside member to mechanically move said control member to a neutral position, and said mechanically locking member arranged to lock said movable menbers in said neutral position.

13. A train apparatus comprising an electromagnetic member, a movably mounted ermanent magnetic member and a mechanical locking member controlled by said electromagnetic member, in combination with a roadside source of electrical energy and roadside members at stated intervals along the traclrway, said electromagnetic member arranged to be responsive to the electrical condition of said roadside members and to move said permanent magnetic member to a position correspondin to said electrical condition thereof, and said permanent magnetic member when in said selected position res onsive to said electromagnetic member to e retained therein magnetically, with means co-actuable with said roadside member to move said permanent magnetic member to a neutral position engageable with said locking member.

ANDREW J. BROOKINS.

Witness CHARMS TURNER BROWN. 

